Walnut Grove township Flag

Walnut Grove township

County Seat:
No
Area (mi²):
36.266
State:
Illinois

Walnut Grove township is located in McDonough County, Illinois. Walnut Grove township has a 2026 population of 447. Walnut Grove township is currently declining at a rate of -1.11% annually and its population has decreased by -3.46% since the most recent census, which recorded a population of 463 in 2020.

The median household income in Walnut Grove township is $64,352 with a poverty rate of 8.07%. The median age in Walnut Grove township is 45.5 years: 44.8 years for males, and 45.6 years for females. For every 100 females there are 104.0 males.

447
Total Population
12
Density (mi²)
-5 -1.11%
Growth

Walnut Grove township Population

Walnut Grove township Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
2026447-5-1.11%
2025452-5-1.09%
2024457-5-1.08%
202346200%
202246220.43%
2021460-3-0.65%
2020463-3-0.64%
2019434-4-0.91%
2018438-7-1.57%
2017445-8-1.77%
2016453-4-0.88%
2015457-3-0.65%
2014460-6-1.29%
2013466-2-0.43%
201246800%
2011468-1-0.21%
201046900%

Median Age

Overall: 45.5 years
Female: 45.6 years
Male: 44.8 years

Walnut Grove township Adults

There are 441 adults, (99 of whom are seniors) in Walnut Grove township.

Sex Ratio

Female: 249 (49%)
Male: 259 (51%)

Demographics

The racial composition of Walnut Grove township includes 95.08% White, 4.13% Black or African American, and smaller percentages for Two or more races and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White48395.08%
Black or African American214.13%
Two or more races40.79%
Race
Population ↓
Percentage (of total)
White10.2%
Two or more races10.2%
Race
Population ↓
Percentage (of total)
White48294.88%
Black or African American214.13%
Two or more races30.59%

Walnut Grove township Marital Status

Economics and Income Statistics

Walnut Grove township 's average per capita income is $41,875. Household income levels show a median of $64,352. The poverty rate stands at 8.07%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$94,637-
Families$94,153$105,021
Households$64,352$85,642
Non Families$60,729$60,890

$41,875

Average Income

$64,352

Median Household Income

8.07%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)